[Q] general performance issues - Xperia Z2 Tablet Q&A, Help & Troubleshooting

After a week of debating what tablet to choose, a nexus 9 or a z2, I went with the z2 due to built quality. Coming form a 2013 Nexus 7 I find the general performance pretty subpar when compared to the Nexus.
For example when I open Google Earth the spinning globe animation is heavily shuttering and the Firefox browser is choppy on most of the sites I visit. Using a CPU meter application I noticed two cores are always stopped and the active ones almost never go above 20% usage.
The only times I've seen a 100% CPU utilization on all cores is when I'm running some benchmarks, like AnTuTu.
I'm on Android 4.4.4 with the latest stock rom, unrooted and I've temporarily disabled all the power saving features, just to make sure this isn't the cause of the performance issues.
Are there any other settings that may affect the general performance and force the CPU to use only two cores are very low frequencies?

Be interested to see if you find anything around this my N7 2013 died this weekend and I am looking at alternatives

Related

[Q] JellyBean Battery Life

How do you all find the new Jellybean update's battery life? Better or worse than ICS? I'm guessing worse because of Google Now, but just wondering...(I don't have phone yet)
seems worse to me i was gettinf better battery life on ICS.. my battery drops from 100% to 50% way to fast..
Battery life on the new JB update is amazing!
Even MeanROM never was this good with battery life!.
After a couple of days and restarts its looking good
Sent from my EVO using xda premium
evo401 said:
seems worse to me i was gettinf better battery life on ICS.. my battery drops from 100% to 50% way to fast..
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If you were not such a FLASHAHOLIC just sayin
There is actually a logical and technical reason as to why JB have worse battery life than ics.
As many people probably know, JB focuses on project butter which aims to make the android experience smoother.
Unfortunately, Google's philosophy is about brute forcing into the problem by relying on raw cpu and gpu power instead of fixing their shaddy code.
The most noticeable difference on JB is UI becomes smoother but that smoothness came at a price, the cpu and gpu has to work harder to maintain 60fps with added vsync triple buffering on top of it.
I also noticed that HTC has boosted the.default 3d gpu clock of adreno 225 on their latest kernel to compensate for the additional workload to maintain smoothness. Some people that is familiar to overclocking knows that if the clocks are increased, the power consumption also increases. It is also not help by the fact that EVO 4g LTE can't always maintain 60fps so it has to work extra hard.
Probably not a lot of people know this but android has abysmal input lag and Google tried to address the issue(in which imo they horribly failed) by boosting the cpu clocks everytime you touched the screen. Obviously, raising the clocks would have negative impact on battery life so if you type a lot or Swype a lot or scroll alot, the cpu would get raised everytime. You could see it yourself by installing a program called micro cpu monitor.
The most obvious way to see the input lag in action is try playing a music then replicate the beats on apps like real drums. The lumia 900 which has single core or even the iPhone 4 which has single core 800mhz cortex a8 does not suffer from horrible input lag.
I was really disappointed with Google and it seems like they have no plans to really fix the core problems in the near future.
Sent from my EVO using xda premium
bigdaddy619 said:
If you were not such a FLASHAHOLIC just sayin
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hahahah!! u are so rite!! i do have a problem with flashing

So is honor 5X running CM13 or any other "lightweight" ROM significantly faster?

So is honor 5X running CM13 or any other "lightweight" ROM significantly faster?
I used Nexus 5 for 2,5 years. What a great phone it was.
My usage consists of:
a) endomondo,
b) relay for reddit,
c) browsing teh internet,
No gaming whatsoever.
My N5's power button died (RIP) so I decided to give Honor 5X a shot, since I had opportunity to get it really cheap.
I love the feeling of the phone, the screen and battery life and fingerprint sensor are amazing - even the camera which is mediocre at best by today's standards surpasses the one on my good old N5.
BUT it is so much slower than N5 that it starts to really grind my gears.
When an app is opened, it works just fine - however the speed of changing apps is terrible, EMUI is way too aggressive with RAM management aswell. Waiting 5s for hangouts to load gets annoying really fast.
I currently use Nova Prime with stock OS and other than the speed itself I have no complaints, I really like the phone.
So, my question is: did you notice significant speed increase after flashing CM/alike ROM? Is it worth the hassle for someone who did not do it before?
Thanks in advance.
Yes, I believe that is a noticeable performance increase and is well worth trying out - just make sure you make a full Nandroid backup in case anything goes wrong and then you're safe to do as you please. I don't think it's too much hassle. It's pretty fast for this kind of hardware at this price point, But of course, this isn't a flagship phone like a Nexus so don't expect speeds of that caliber. Overall CM 13 feels buttery smooth to me. I have no issues with it whatsoever. Some people may have issues with XPosed, but so far I have none- your mileage may vary.
The only thing you might miss is the current lack of Fingerprint support - the Devs are aware of this and are working hard at this and are always being harassed about it, haha. Real work on that sensor won't be until the Official Marshmallow release, and it's not even a guarantee since the devs work on this ROM in their spare time. I still give props to crpalmer for providing us with such a nice CM13 for the Honor 5X.
Yes. Former Nexus 5 user as well and I loved that phone to death. CM13 performance on the Honor 5X is comparable to Marshmallow on N5. Very occasional minor hitches and glitches, and the rare crash and reboot, but overall buttery smooth just like the N5 and I am very happy with it. Leaps and bounds better than EMUI.
Biggest improvement is multitasking in my opinion. The EMUI Task switcher is glitchy and clunky and as soon as you start flying back and forth between apps on the recent screen in CM13 it will hit you how slow and limiting EMUI has been.
yes, I am running parallel shifts on SlimROM by @jsbeyond and the default EMUI (rooted and debloated), and the difference is quite telling! It almost seems like a competent athlete speeding away to the racing line while running Slim, while on EMUI it runs like an injured confused directionless bum. Only thing I miss from EMUI is the camera app
Like @mtmv2 said, multi tasking and fluidity is where you will feel most of the difference. I personally felt that the audio output (speakers) on Slim is also way less muffled than in EMUI. I use V4A as well, on both, so I am sure of the difference in audio with the same V4A profiles running in both environments. Battery on Slim is more controllable for drain, privacy protection, boot apps control etc is way better. Best of all is the battery saver, that stops the auto-sync only and helps battery last longer unlike in the EMUI which turns the phone into a 1990s sort of device with call and paging functions the moment you pick "battery saving mode"! Least said the better, but Slim restores all the android dignity of icons and animations compared to the toyish, immature, wannabe UI of the OEM.

Is it just me or Nougat on N9 is terribly slow and hot ?!

I've tried all previews and everytime I had to go back to M, the rom is slow and my N9 is very hot !
I thought it was the previews, but now I'm on final, and I have the same behavior.
Chrome is also verry verry slow and I have to kill if I wan't to use my tablet for something else.
Do you have this behavior on your tablets ?
No, in my case Android 7 is considerably faster than Android 5 and 6.
I get the same problems, plus some apps just decide to crash, last one to crash was Geekbench 3.
Also games are really laggy.
I flash the factory images with fastboot (erasing/formating everything) and my N9 is better now, but I'm still not convice that Nougat is ready for release.
Using chrome still makes the tablet very hot (and laggy).
It may be a chrome issue.
Funny enough i only really started to notice how slow the N9 actually is after replacing my phone with a OnePlus 3.
(yeah yeah it has a snapdragon 820 and is like 50x faster than the N9 regardless)
Overal though I've been noticing a massive degradation in my tablet's performance. Just 2 tabs in chrome is enough to start lagging it out. (Although I have the say the final Android 7 version seems considerably faster then the last Preview 5)
I'm just going to look look for a new tablet now. Because I doubt the problem is just chrome related. There just aren't many clean stock android tablets which is a real shame. But I am never buying a tablet with only 2gb RAM or a dual core again ever in my life.
Mine is pretty poor, im yet to use an android tab thats any good, can't really say its any worse since nougat but its no better either, way way slower than my phone and always has been, really dissapointed to be honest...
For me its like the Ram or processor just can't cope with even the most simple of tasks, mine's stock really considering rooting it and trying a lightweight rom to see if it improves it...
Same here... over time this device starts to get slow, especially when bringing up pages via google now or with Chrome.
Luckily, for me at least, clearing the cache resolves the slowness every time.
Yes, the Nexus 9 is slow on Nougat. Not as slow as the initial Lollipop release but still. The Nexus 9 performance seems totally inconsistent. At times it is blazing fast for an instant and then it starts stuttering. The slowdowns consistently occur when there are filesystem operations, like upgrading apps in the background.
Probaly because of nvidia soc, my nexus 5 is much faster when browsing etc. My nexus 7 was slow too even though its performance was great in benchmarks for its time
Yes. I like the split screen, often on the web with Evernote open. But, it's so slow.
Time for a custom rom?
Performance is much poorer on Nougat. Also seeing crashed. And when idle for a few hours, Wifi disconnects and doesn't reconnect when woke up.
Yes horrible on N, it gets hot and crashes! I don't love Tegra either. I think they are bad chips.

Scrolling lag

I've just bought this device and despite the good hardware i've noticed that the scrolling in many apps is really bad.
For example in apps such as Youtube, Play Store, Spotify, Amazon Prime Video the scrolling is really choppy. Web surfing in chrome is quite smooth instead.
Have you noticed this too? Is there a way to fix this issue? My antutu score is over 170000 points so i don't think i've performance problems. I'm running the last update with february security patches.
Thank you
Just badly optimised software
I noticed that too. It like day and night, compared to my pixel 2 xl in terms of smoothness and performance. I am very disappointed in this tablet. ?
I also notice very slow and choppy scrolling in Gmail app. Annoying. Hopefully, EMUI 9 will improve.
-error said:
I noticed that too. It like day and night, compared to my pixel 2 xl in terms of smoothness and performance. I am very disappointed in this tablet. ?
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Google uses such aggressive kernel settings to achieve that buttery smoothness that their devices tend to die in large numbers within the first 2 years of launch.
I can't speak for the Pixel 2XL but the Nexus 5X, Nexus 6P and Pixel XL all died in large numbers within 2 years (often after just 5 or 6 months) because the aggressive kernel settings generated too much heat leading to internal component damage.
I find the M5 smooth but I'm comparing it to other tablets from Chuwi, Amazon and Samsung rather than my phone which cost twice as much as this tablet and is indeed smoother and snappier.
---------- Post added at 05:55 PM ---------- Previous post was at 05:49 PM ----------
newtube said:
I've just bought this device and despite the good hardware i've noticed that the scrolling in many apps is really bad.
For example in apps such as Youtube, Play Store, Spotify, Amazon Prime Video the scrolling is really choppy. Web surfing in chrome is quite smooth instead.
Have you noticed this too? Is there a way to fix this issue? My antutu score is over 170000 points so i don't think i've performance problems. I'm running the last update with february security patches.
Thank you
Click to expand...
Click to collapse
Trying going into the tablet manager app and let it optomize your device (or if you prefer just go into the Cleanup tab which will clean the system cache). A lot of owners have reported improved performance after using that app.
jhs39 said:
Google uses such aggressive kernel settings to achieve that buttery smoothness that their devices tend to die in large numbers within the first 2 years of launch.
Click to expand...
Click to collapse
I didn't look closely what they are doing with kernel on pixels, but read that smoothness comes from new "energy aware scheduler". Reading respective subreddit I haven't seen too many stories of devices dead because overheating.

Question Laggy UI and bad real world performance

I recently went from a oneplus 5 to the nord 200 when I switched to t-mobile because of the free promotion. Before I got it I did a little bit of research on the processor and storage speed and didn't expect much of a difference in performance because the snapdragon 480 seems to be fairly powerful and the nord has the same UFS 2.1 storage as my old phone.
I was pretty disappointed to find in my use the phone about 1/2 the time the phone was pretty sluggish in the general user experience and app launch times were significantly longer. May be placebo, but I disabled digital wellbeing, and all the tmobile bloatware and it may have helped a little. I remember reading oneplus heavily throttled some of their phones in recent history. I may switch back to my old phone.
I know the device is relatively new, do you guys think it will get better with software updates or is this just how it is?
I found turning on "Mobile data always active" in the developer options massively improved performance in my apps (at least where online load times and download speeds in-game were concerned)
Did you just get your phone recently? After setting up this phone for the first time, I also noticed the device was extremely slow, with all the app and software updates happening in the background. After all the updates were installed, I turned the phone off for about a day, and performance went to normal. It's not as fast as a flagship and there are minor hiccups here and there, but that's about what I expected from a 400 series SoC.
My original report was the day after I set everything up, I disabled the permissions for the launcher which did improve the responsiveness of the launcher, but application performance and launch times are still slow compared to my old device and not what I would expect from a phone of this spec.
I'm pretty confident this phone is a victim of oneplus' recently reported throttling for battery life. I was curious and compared geekbench scores (which aren't throttled under oneplus' list) and both the nord and my oneplus 5 got fairly similar scores for both cpu and compute. I tried out a browser benchmark motionmark which benches graphics performance. The nord got a 25 and the oneplus 5 got a 189... I ran the test again to make sure but got similar results.
That graphics should be coming from gpu and not cpu though....
I tested cpu and compute on geekbench, compute is a measure of gpu performance. The nord scored a little higher than the 5 in that.
I would assume oneplus' throttling would effect cpu and gpu but even if not, my oneplus 5 scoring almost 8x as high does not seem anywhere near normal
T1Coreon said:
I recently went from a oneplus 5 to the nord 200 when I switched to t-mobile because of the free promotion. Before I got it I did a little bit of research on the processor and storage speed and didn't expect much of a difference in performance because the snapdragon 480 seems to be fairly powerful and the nord has the same UFS 2.1 storage as my old phone.
I was pretty disappointed to find in my use the phone about 1/2 the time the phone was pretty sluggish in the general user experience and app launch times were significantly longer. May be placebo, but I disabled digital wellbeing, and all the tmobile bloatware and it may have helped a little. I remember reading oneplus heavily throttled some of their phones in recent history. I may switch back to my old phone.
I know the device is relatively new, do you guys think it will get better with software updates or is this just how it is?
Click to expand...
Click to collapse
Same experience here, i picked up this phone expecting at least a decent experience but still get bad slow not usable for everyday tasks sometimes.
Im not expecting a flagship performance of course but this is far from decent in my experience.
I hope android 12 will solve many performance issues. Or custom fw
I'm about to throw away this phone into trash. Did not expect so weak dev community activity. The laggy interface is almost unusable if you constantly swap between apps and find them unloaded from RAM. All my text or uploaded content just disappear. It is very frustrating experience. I never had this behaviour with my 2/32 gb xiaomi.
zaooza said:
I'm about to throw away this phone into trash. The laggy interface is almost unusable if you constantly swap between apps and find them unloaded from RAM. All my text or uploaded content just disappear. It is very frustrating experience. I never had this behaviour with my 2/32 gb xiaomi.
Click to expand...
Click to collapse
If you're really at your wit's end, have you considered installing a GSI? I've tried Phh's AOSP w/ gapps, and once you register your device with Google, it works flawlessly (except safetynet/drm) and is a million times faster than stock. Or I'd be more than happy to take your device off your hands.
zaooza said:
Did not expect so weak dev community activity.
Click to expand...
Click to collapse
You know, custom ROMs don't just appear out of thin air. Someone has to take the time to bring up a device and make it stable, and it's not an easy task. I would say to be patient and just accept the fact that there's no guarantee that this device will get custom ROMs.
lzgmc said:
If you're really at your wit's end, have you considered installing a GSI? I've tried Phh's AOSP w/ gapps, and once you register your device with Google, it works flawlessly (except safetynet/drm) and is a million times faster than stock. Or I'd be more than happy to take your device off your hands.
You know, custom ROMs don't just appear out of thin air. Someone has to take the time to bring up a device and make it stable, and it's not an easy task. I would say to be patient and just accept the fact that there's no guarantee that this device will get custom ROMs.
Click to expand...
Click to collapse
Any disadvantages with gsi besides safety net drm? Want to try gsi but this is new to me
Metconnect2000 said:
Any disadvantages with gsi besides safety net drm? Want to try gsi but this is new to me
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Click to collapse
Other than pictures from the camera being degraded compared to stock and having to install apps from the Play Store/changing a few settings in the Settings app, everything seems to work fine

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